Spare-tire lock



May k1'37, 1927.

D. F.AXELSON SPARE TIRE Lock Filed June 7, 1923 Hrafomzzs:

l tires are ordinarily Patented May 17, 1927.

UNITE STATE PATENT OFFQC' DEL-BERT F. AXELSON, 0F LOS-ANGELES, CALIFORNIA, ASSIGNOR T0 AXELSON MA- CHINE COMPANY, OF LOS ANGELES, CALIFORNIA,

A CORPORATION 0F CALIFORNIA.

SPARE-TIRE LOCK.

Application filed .Tune 7,

My invention relates to a mcthodof locking a spare tire on an automobile. Spare placed upon a rack secured to the rear of the automobile, and are secured thereon by means of one or more bolts; As ordinarily zconstructed, it is a very easy matter to remove spare tires from the rack', and there are frequent thefts of spare tires.

It is lthe object of my invention to provide a key operated tire lock, by means of which the theft of a spare tire may beprevented.

Further objects and advantages will be made evident hereinafter.

Referring to the drawingwhich is for illustrative purposes only.

Fig.`I 1 is a view of a portion of a spare tire'on arack equipped with my invention.

Fig. 2 is a section 'on an enlarged scale through a'lock embodying my invention.

Fig. -3 is a section on a plane represented by the line v3--3 of Fig. 2.

Fig.` 4 is an alternative form of my lnvention.v

Fig, showing. shown in Fig. 2.

In the conventional form of tire lock, the spare tire 11 is carried in a metal rim 12, which slides over the rack circle 13 and is secured thereon by means of lugs 14, which fulcrum at 15 on the circle 13, and are pulled down to a'solid seat on the rim by means of a bolt 16 having a nut 17 threaded thereon. In the form of construction utilized in my invention, the nut 17 is made cylindrical in contour, and is provided with an annular rim 18, having semi-cylindrical notches 19 formed therein. casing 20 has an end plate 21 which is pressed therein, and is welded along the point, of juncture, as shown at 22. The end platel 21 seats under the annular portion 18 of the nut 17 'so that after 5 is a section on an enlarged scale the weld 22 is made, the end late and casing are secured together, the nut eing free, however, to turn inside the casing, `and the casing being free to turn upon the nut. The casing isprovided with a square or hexagonal'head23. Sliding -in a groove in the casing is a locking bolt or plunger 30, which is of proper size to enter the notches 19 of the nut. This bolt is actuated by a cam 31 which o crates in a cam slot formed in said bolt an which is turned by a stem 32, the

the bolt mechanism of `the lock 1923. seril No. 643,883.

cam 31 moving the bolt in the direction of vThe bolt being forced to the right as Vshown in Figs. 2 and 5, by means of the keyv 41, locks the nut 17 and the casing 2O solidly together, so that they can be moved as a unit. It is then possible by placing a wrench on the head 23 of the casing 20, to turn the casing andthe nut together to either remove or replace the nut on the -bolt 16. When, however, the nut has been replaced on the bolt' and screwed solidly home so that the spare tire is securely fastened to the rack circle 13, it is then possible by turning the key 41 to withdraw the bolt 30 from the grooves 19, so that the casing 2O turns freely on the nut. With the parts in this condition,

it is impossible to remove the nut since it is protected, against turning by the loose casing which turns freely thereon. Whenever it is desired, however, to remove the nut the bolt 30 is again actuated, locking the nut and casing together.

In Fig. 4 I showan alternative form having a nut on the bolt 16, this nut being of cylindrical contour as before, .and being secured in place in a casing 51 by means of an end plate 52 welded thereon, as shown thereon at 53. A bolt 54 slides radially to the nut 50, having a small` in 55 on the end thereof, which enters c indrical holes 56 drilled in the nut. The olt 54 is operated by a cam 57 operated from the stem 58 of a tumbler lock 59, which in turn is opera key 60. A hexagonal head 61 is provided on the outer end of the` casing. This form of device o rates in substantially the same manner as tat shown in Figs. 2, 3

lll

' free to rotate with relation thereto: means.

ivi

for securing said casing around said nut: key-operated means for looking said casing on said nut so that said nut may be nn-` seren'ed by turning said easing, said key- -operated means comprising a locking bolt sliding in said easing and adapted to engage said nut and means for sliding said locking bolt into, or ont of, engagement with said nnt.

3. A lock comprising: a bolt; a nut threaded on said bolt, said bolt passing tlirougb said nut; a easing surrounding said nut and free to rotate with relation thereto; means for securing said casing around said nut; key-operated means for locking said casing on said nut so that said nut may be 1111-' screwed by f turning said casing, said keyoperated means; comprising a locking bolt sliding in said easing and adapted to engage said nut; and means for sliding said locking `bolt into, or out of, engagement with said nut, said locking bolt being adapted to slide in a groove formed in said casing and to engage a notch 'formed in said nut.

4. A lock comprising: a bolt; a nut 'threaded on said bolt, said bolt passing through said nut; a casing surroundlng said nut and ree to rotate with relation thereto; means manoirs for securing said @asin around said nut; keyoperated means oeoe'king said easing on said nut so 'that said nut may be unscrenfed by turning said casing, said keyoperated means comprising a locking bolt sliding in said easing and adapted to engage said nut; and means for sliding said locking boltinto, or ont ot. engagement with said nut. said locking bolt being adapted to slide in a groote formed in said casing and to engage a notch formed in said nut; said groove lbeing "formed parallel to, but separated from, tbe axis of said nut.

5. A look comprising: a bolt; a nut adapted to be threaded onto said bolt; a casing on said nut, said casing being rotatable thereon: a plunger carried inside said easing adapted to be engaged with said nut in a manner ro lock said easing to said nut; a cam adapted to operate in a slot in said plunger for 4moving said plunger into engagement with said nut; and means for actuating said cam.

6. A lock comprising: a bolt; a nut adapt-` ed to be threaded onto said bolt; a casing oulv said nut, said casing being rotatable thereon: a plunger carried inside said easing adapted to be extended axially with respect to said nut into engagement with said nnt in a mannor to lock said easing to said nat; a cam adapted to operate in a slot in said plunger for moving said plunger into engagement with said nut; and means for actuating said cam.

In testimony whereof, I have hereunto set niyliand at Los Angeles, California, this 1st day of June, 1923.

DELBERT F. AXELSN. 

